If I see a cookie banner I often bounce.
You'd have much better retention rates if you don't cover up the content the viewer is trying to view.
How would you like it if I shoved a banner in your face the moment you walked into a store and forced you to punch a hole in it in order to view items on the shelves?
There is a push for something like that: https://www.adweek.com/commerce/cooler-screens-rolls-out-to-...